Display device

Abstract

Embodiments of the present application provide a display device. The display device includes a display panel and a timing controller. The display panel includes a plurality of data lines and a plurality of pixel columns. One pixel column is located between adjacent data lines and includes at least two pixels. The timing controller is connected with the display panel. The timing controller is configured to: determine coupling effect cumulative data of data voltages transmitted by data lines adjacent to a to-be-compensated pixel in a previous frame and a current frame on the data voltage of the to-be-compensated pixel in the current frame; determine a gray scale compensation value of the to-be-compensated pixel in the current frame based on the coupling effect cumulative data and a gain coefficient; and compensate an original gray scale value of the to-be-compensated pixel in the current frame based on the gray scale compensation value to obtain a target gray scale value. In this way, the problem of uneven picture brightness of the display panel caused by coupling capacitance during display is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device. BACKGROUND

[0002] Liquid crystal display utilizes the optical properties of liquid crystal material to realize the display of picture by applying different electric field to the liquid crystal to make it produce a certain angle of deflection. Liquid crystal display is a complex electronic product, there are a large number of coupling capacitances between the data lines, electrodes and thin film transistors of the liquid crystal display panel, which can derive many display problems, such as causing the uneven brightness of picture display, i.e. Mura phenomenon. SUMMARY

[0003] The embodiments of the present application provide a display device to improve the uneven brightness problem of display panel caused by coupling capacitance during display, to at least partially solve the above problems.

[0004] In order to solve the above problems, the embodiments of the present application provide a display device. The display device comprises a display panel and a timing controller. The display panel comprises a plurality of data lines and a plurality of pixel columns. One of the pixel columns is located between adjacent data lines and comprises at least two pixels. The timing controller is connected with the display panel. The timing controller is configured to: determine coupling influence cumulative data of data voltages transmitted by data lines adjacent to a to-be-compensated pixel in a previous frame and the current frame on the data voltage of the to-be-compensated pixel in the current frame; determine a gray scale compensation value of the to-be-compensated pixel in the current frame based on the coupling influence cumulative data and a gain coefficient; and compensate an original gray scale value of the to-be-compensated pixel in the current frame based on the gray scale compensation value to obtain a target gray scale value.

[0005] In the display device of the embodiments of the present application, the coupling influence cumulative data of data voltages transmitted by data lines adjacent to a to-be-compensated pixel in a previous frame and the current frame on the data voltage of the to-be-compensated pixel in the current frame is determined, a gray scale compensation value of the to-be-compensated pixel in the current frame is determined based on the coupling influence cumulative data and a gain coefficient, and an original gray scale value of the to-be-compensated pixel in the current frame is compensated based on the gray scale compensation value. In this way, the deviation of the data voltage of the to-be-compensated pixel caused by the capacitive coupling effect of the adjacent data lines in the adjacent frames is reduced, and the uneven brightness problem of picture caused by capacitive coupling during display of the display panel is improved. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 A structural schematic diagram of the display device provided by the embodiments of the present application is shown in the figure;

[0007] Figure 2 A structural schematic diagram of the connection relationship between the data lines and the pixels provided by the embodiments of the present application is shown in the figure;

[0008] Figure 3 Another structural schematic diagram of the connection relationship between the data lines and the pixels provided by the embodiments of the present application is shown.

[0009] The reference signs are as follows:

[0010] 100, display device;

[0011] 11, display panel;

[0012] 111, data line; 111A, data line; 111B, data line;

[0013] 112, scan line;

[0014] 113A, pixel repeating unit; 113, pixel; 1131, first pixel; 1132, second pixel; 1133, third pixel;

[0015] 12, timing controller; 13, gate driver; 14, data driver;

[0016] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] Referring to Figure 1 It is shown that the display device 100 includes a display panel 11, a timing controller 12, a gate driver 13 and a data driver 14.

[0019] Referring to Figure 2 and Figure 3 It is shown that the display panel 11 includes a plurality of data lines 111, a plurality of scan lines 112 and a plurality of pixels 113 arranged in an array. The plurality of data lines 111 and the plurality of scan lines 112 insulate and cross each other.

[0020] In some embodiments, the pixel 113 can include a non-active light-emitting device such as a liquid crystal display device. In other embodiments, the pixel 113 can also include an active light-emitting device such as an organic light-emitting diode or an inorganic light-emitting diode. Exemplarily, the pixel 113 includes a pixel electrode and a liquid crystal of a liquid crystal display device, and at this time, the display panel 11 is a liquid crystal display panel.

[0021] In some embodiments, when the display panel 11 is a liquid crystal display panel, the adjacent data lines 111 output data voltages of first and second polarities respectively, to improve the problem of liquid crystal polarization. The first polarity can be one of positive polarity and negative polarity, and the second polarity can be the other of positive polarity and negative polarity. Exemplarily, the first polarity is "+", and the second polarity is "-".

[0022] It should be noted that when the display panel 11 is a liquid crystal display panel, the display panel 11 further comprises a common electrode (not shown in the figure). When the data voltage output by the data line 111 to the pixel electrode is greater than the common voltage output by the common electrode, the data voltage output by the data line 111 is of positive polarity. Conversely, when the data voltage output by the data line 111 to the pixel electrode is less than the common voltage output by the common electrode, the data voltage output by the data line 111 is of negative polarity.

[0023] The gate driver 13 is connected with the plurality of scan lines 112, to output scan signals to the plurality of scan lines 112 respectively.

[0024] The data driver 14 is connected with the plurality of data lines 111, to output data voltages to the plurality of data lines 111 respectively.

[0025] In the first direction X, the plurality of pixels 113 constitutes a plurality of pixel rows, and one pixel row comprises at least two pixels 113 arranged in the second direction Y. The at least two pixels 113 of one pixel row are connected with one scan line 112. In the second direction Y, the plurality of pixels 113 constitutes a plurality of pixel columns. One pixel column comprises at least two pixels 113 arranged in the first direction X. Each pixel 113 is connected with one data line 111. In some embodiments, the at least two pixels 113 of one pixel column are connected with two data lines 111 respectively.

[0026] When the gate driver 13 outputs a turn-on scan signal to one scan line 112, the scan line 112 is selected, and the data signal output by the data line 111 is output to the at least two pixels 113 of the pixel row connected with the selected scan line 112.

[0027] In some embodiments, the first direction X intersects with the second direction Y. Exemplarily, the first direction X is perpendicular to the second direction Y.

[0028] In some embodiments, with reference to Figure 2 and Figure 3As shown, the plurality of pixel rows includes a plurality of pixel row groups arranged along the first direction X. One pixel row group includes a first pixel row, a second pixel row and a third pixel row arranged along the first direction X in sequence. The first pixel row includes at least two first pixels 1131 arranged along the second direction Y. The second pixel row includes at least two second pixels 1132 arranged along the second direction Y. The third pixel row includes at least two third pixels 1133 arranged along the second direction Y. The first pixels 1131, the second pixels 1132 and the third pixels 1133 are different from each other, for example, red pixels, green pixels and blue pixels respectively. The first pixels 1131, the second pixels 1132 and the third pixels 1133 in one pixel column and one pixel row group form one pixel repeating unit 113A.

[0029] In some embodiments, referring to Figure 2 As shown, two adjacent pixel repeating units 113A along the first direction X are connected with two adjacent data lines 111 respectively. Two adjacent pixel repeating units 113A along the second direction Y are connected with two adjacent data lines 111 respectively. The two adjacent data lines 111 transmit data voltages of the first polarity and the second polarity respectively.

[0030] In some embodiments, referring to Figure 3 As shown, one pixel column includes a plurality of pixel repeating unit pairs, one pixel repeating unit pair including two adjacent pixel repeating units 113A. Two adjacent pixel repeating unit pairs along the first direction X are connected with two adjacent data lines 111 respectively. Two adjacent pixel repeating unit pairs along the second direction Y are connected with two adjacent data lines 111 respectively. The two adjacent data lines 111 transmit data voltages of the first polarity and the second polarity respectively.

[0031] For the designs shown in Figure 2 and Figure 3 One data line 111 can output corresponding data voltages to the first pixel 1131 to the third pixel 1133 of one pixel repeating unit 113A, reducing the number of data lines 111 and the overall channels of the data driver 14.

[0032] The timing controller 12 is connected with the gate driver 13 and the data driver 14 to control the gate driver 13 to output scan signals to the scan lines 112 and control the data driver 14 to output data voltages to the data lines 111. The timing controller 12 is also connected with the display panel 11.

[0033] In some embodiments, the timing controller 12 is configured to: determine coupling influence cumulative data of data voltages transmitted by the data line 111 adjacent to the to-be-compensated pixel in a previous frame before the current frame and in the current frame on the data voltage of the to-be-compensated pixel in the current frame; determine a gray scale compensation value of the to-be-compensated pixel in the current frame based on the coupling influence cumulative data and a gain coefficient; and compensate an original gray scale value of the to-be-compensated pixel in the current frame based on the gray scale compensation value to obtain a target gray scale value. In this way, the gray scale compensation value can reduce the deviation of the data voltage of the to-be-compensated pixel caused by the capacitive coupling of the adjacent data line 111 in the adjacent frame, and improve the problem of uneven brightness of the display panel 11 caused by capacitive coupling during display.

[0034] In some embodiments, the determination of the coupling influence cumulative data of the data voltages transmitted by the data line 111 adjacent to the to-be-compensated pixel in a previous frame before the current frame and in the current frame on the data voltage of the to-be-compensated pixel in the current frame comprises:

[0035] determining first coupling influence cumulative data of the data voltages transmitted by one or more left data lines adjacent to the to-be-compensated pixel in the previous frame and in the current frame on the data voltage of the to-be-compensated pixel in the current frame;

[0036] determining second coupling influence cumulative data of the data voltages transmitted by one or more right data lines adjacent to the to-be-compensated pixel in the previous frame and in the current frame on the data voltage of the to-be-compensated pixel in the current frame, the to-be-compensated pixel being located between the one or more left data lines and the one or more right data lines;

[0037] obtaining total coupling influence cumulative data based on the first coupling influence data and the second coupling influence data;

[0038] obtaining the coupling influence cumulative data based on the normalization reference data, the equalization reference data, and the total coupling influence data.

[0039] In some embodiments of the present application, the first coupling influence data and the second coupling influence data are obtained based on the total coupling influence data of the data voltages output by the one or more left data lines and the one or more right data lines adjacent to the to-be-compensated pixel in the adjacent two frames on the data voltage of the to-be-compensated pixel, taking into account the cumulative coupling capacitance of the data voltage of the to-be-compensated pixel in the current frame due to the position relationship and time. Moreover, the normalization reference data balances the contribution degree of the first coupling influence data and the second coupling influence data to the total coupling influence data, and the equalization reference data divides the total coupling influence data to the to-be-compensated pixel. Therefore, the gray scale compensation value obtained based on the coupling influence cumulative data and the gain coefficient can better compensate for the deviation of the data voltage of the to-be-compensated pixel caused by the adjacent data line 111 in the cumulative two frames, and improve the problem of uneven brightness of the display panel.

[0040] In some embodiments, the first coupling effect cumulative data of the data voltage of the one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame is obtained based on the first left coupling capacitance cumulative data and a first left coupling impact coefficient of the first left data line adjacent to the pixel to be compensated.

[0041] The first left coupling capacitance cumulative data of the data voltage of the first left data line adjacent to the pixel to be compensated in the previous frame and the current frame is determined.

[0042] The first coupling effect cumulative data is obtained based on the first left coupling capacitance cumulative data and a first left coupling impact coefficient of the first left data line adjacent to the pixel to be compensated.

[0043] In some embodiments of the present application, the first left data line is the left data line closest to the pixel to be compensated, and has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first left data line on the pixel to be compensated is the main effect of the plurality of left data lines on the pixel to be compensated.

[0044] In other embodiments, the first coupling effect cumulative data of the data voltage of the one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame is obtained by:

[0045] The first left coupling capacitance cumulative data of the data voltage of the first left data line adjacent to the pixel to be compensated in the previous frame and the current frame is determined.

[0046] The second left coupling capacitance cumulative data of the data voltage of the second left data line adjacent to the pixel to be compensated in the previous frame and the current frame is determined, and the first left data line is located between the second left data line and the pixel to be compensated.

[0047] The first left coupling effect cumulative data is obtained based on the first left coupling capacitance cumulative data and a first left coupling impact coefficient of the first left data line adjacent to the pixel to be compensated.

[0048] The second left coupling effect cumulative data is obtained based on the second left coupling capacitance cumulative data and a second left coupling impact coefficient of the second left data line adjacent to the pixel to be compensated.

[0049] The first coupling effect cumulative data is obtained based on the first left coupling effect cumulative data and the second left coupling effect cumulative data.

[0050] In some embodiments of the present application, since the first left data line and the second left data line are the two left data lines closest to the pixel to be compensated, the two left data lines have greater influence on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling influence of the first left data line and the second left data line on the pixel to be compensated can represent the total coupling influence of the left data lines on the pixel to be compensated.

[0051] In some embodiments, determining a first left coupling capacitance cumulative data of the data voltage of the pixel to be compensated in the current frame, which is influenced by the data voltage of the pixel to be compensated in the previous frame and the current frame output by a first left data line adjacent to the pixel to be compensated, comprises:

[0052] determining a sum of the data voltage output by the first left data line in the previous frame, to obtain a first data voltage sum;

[0053] determining a sum of the data voltage output by the first left data line in the current frame when outputting the data voltage of the row in which the pixel to be compensated is located, to obtain a second data voltage sum;

[0054] adding the first data voltage sum and the second data voltage sum to obtain the first left coupling capacitance cumulative data.

[0055] In some embodiments, based on the first left coupling capacitance cumulative data and a first left coupling influence coefficient of the first left data line on the pixel to be compensated, a first coupling influence cumulative data is obtained, comprising:

[0056] based on a difference between the first preset voltage cumulative data and the first left coupling capacitance cumulative data, a first left coupling cumulative deviation data is obtained; wherein the first preset voltage cumulative data is a product of a total number of scanning rows and the first data voltage, the total number of scanning rows is (V total + i), the first voltage data is the data voltage of the pixel connected to the first left data line in the i-th row, the i-th row is the pixel row in which the pixel to be compensated is located, V total is the total number of scanning lines, and i represents the pixel row in which the pixel to be compensated is located;

[0057] based on a product of the first left coupling cumulative deviation data and the first left coupling influence coefficient, the first coupling influence cumulative data is obtained.

[0058] In other embodiments, a second left coupling capacitance cumulative data of the data voltage of the pixel to be compensated in the current frame, which is influenced by the data voltage of the pixel to be compensated in the previous frame and the current frame transmitted by a second left data line adjacent to the pixel to be compensated, is determined, comprising:

[0059] determining a sum of the data voltage output by the second left data line in the previous frame, to obtain a third data voltage sum;

[0060] determining a fourth data voltage sum of data voltages output by the second left data line in the current frame when outputting data voltages of the row where the pixel to be compensated is located;

[0061] adding the third data voltage sum and the fourth data voltage sum to obtain second left side coupling capacitance cumulative data.

[0062] In some embodiments, based on the second left side coupling capacitance cumulative data and a second left side coupling influence coefficient of the second left data line on the pixel to be compensated, the second coupling influence cumulative data comprises:

[0063] based on a difference between the second preset voltage cumulative data and the second left side coupling capacitance cumulative data, obtaining second left side coupling cumulative deviation data; wherein the second preset voltage cumulative data is a product of a total number of scanning rows and the second data voltage, the total number of scanning rows is (V total + i), the second voltage data is a data voltage of a pixel connected to the second left data line in the i-th row, the i-th row is a pixel row where the pixel to be compensated is located, V total is a total number of scanning lines, and i represents a pixel row where the pixel to be compensated is located;

[0064] based on a product of the second left side coupling cumulative deviation data and the second left side coupling influence coefficient, obtaining the second left side coupling influence coefficient.

[0065] In some embodiments, based on the first left side coupling influence cumulative data and the second left side coupling influence cumulative data, obtaining the first coupling influence cumulative data comprises:

[0066] adding the first left side coupling influence cumulative data and the second left side coupling influence cumulative data to obtain the first coupling influence cumulative data.

[0067] In some embodiments, determining second coupling influence cumulative data of data voltages transmitted by one or more right data lines adjacent to the pixel to be compensated in the previous frame and the current frame on data voltages of the pixel to be compensated in the current frame comprises:

[0068] determining first right side coupling capacitance cumulative data of data voltages transmitted by a first right data line adjacent to the pixel to be compensated in the previous frame and the current frame on data voltages of the pixel to be compensated in the current frame;

[0069] based on the first right side coupling capacitance cumulative data and a first right side coupling influence coefficient of the first right data line on the pixel to be compensated, obtaining the second coupling influence cumulative data.

[0070] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0071] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0072] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0073] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0074] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0075] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0076] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0077] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0078] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0079] In some embodiments of the present application, since the first right data line is the right data line closest to the pixel to be compensated, it has a greater impact on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling effect of the first right data line on the pixel to be compensated is the main effect of the right data lines on the pixel to be compensated.

[0080] determining a sum of data voltages output by the first right side data line in the current frame when outputting data voltages of the row in which the pixel to be compensated is located, to obtain a sixth data voltage sum;

[0081] adding the fifth data voltage sum and the sixth data voltage sum to obtain first right side coupling capacitance cumulative data.

[0082] In some embodiments, the second coupling influence cumulative data is obtained based on the first right side coupling capacitance cumulative data and a first right side coupling influence coefficient of the first right side data line on the pixel to be compensated, and includes:

[0083] obtaining first right side coupling cumulative deviation data based on a difference between the third preset voltage cumulative data and the first right side coupling capacitance cumulative data; wherein the third preset voltage cumulative data is a product of a total number of scanning rows and a third data voltage, the total number of scanning rows is (V total + i), the third voltage data is a data voltage of a pixel connected to the first right side data line in the i-th row, the i-th row is a pixel row in which the pixel to be compensated is located, V total is a total number of scanning lines, and i represents a pixel row in which the pixel to be compensated is located;

[0084] obtaining the second coupling influence cumulative data based on a product of the first right side coupling cumulative deviation data and the first right side coupling influence coefficient.

[0085] In other embodiments, the second right side coupling capacitance cumulative data of the pixel to be compensated is obtained based on data voltages transmitted by a second right side data line adjacent to the pixel to be compensated in a previous frame and a current frame, and includes:

[0086] determining a sum of data voltages output by the second right side data line in the previous frame, to obtain a seventh data voltage sum;

[0087] determining a sum of data voltages output by the second right side data line in the current frame when outputting data voltages of the row in which the pixel to be compensated is located, to obtain an eighth data voltage sum;

[0088] adding the seventh data voltage sum and the eighth data voltage sum to obtain second right side coupling capacitance cumulative data.

[0089] In other embodiments, the first right side coupling influence cumulative data is a product of the first right side coupling capacitance cumulative data and a first right side coupling influence coefficient.

[0090] In other embodiments, the second right side coupling influence cumulative data is a product of the second right side coupling capacitance cumulative data and a second right side coupling influence coefficient.

[0091] In other embodiments, the second coupling influence cumulative data is a sum of the first right-side coupling influence cumulative data and the second right-side coupling influence cumulative data.

[0092] It should be noted that the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient, and the fourth right-side coupling influence coefficient respectively represent the relative size difference of the data voltage output by the corresponding data line to the coupling capacitance, that is, the influence degree of different data lines on the total coupling influence data is taken into account. For example, if the first left-side coupling influence coefficient is greater than the first right-side coupling influence coefficient, it indicates that the influence degree of the data voltage output by the first left-side data line on the coupling capacitance of the pixel to be compensated is greater. Conversely, if the first right-side coupling influence coefficient is greater than the first left-side coupling influence coefficient, it indicates that the influence degree of the data voltage output by the first right-side data line on the coupling capacitance of the pixel to be compensated is greater.

[0093] In one exemplary embodiment, in the case that the first coupling influence cumulative data is a product of the first left-side coupling capacitance cumulative data and the first left-side coupling influence coefficient, and the second coupling influence cumulative data is a product of the first right-side coupling capacitance cumulative data and the first right-side coupling influence coefficient, the value range of the first left-side coupling influence coefficient and the first right-side coupling influence coefficient is 0-256. The sum of the first left-side coupling influence coefficient and the first right-side coupling influence coefficient is equal to 256. If the first left-side coupling influence coefficient and the first right-side coupling influence coefficient are both equal to 128, it indicates that the influence degree of the first left-side coupling capacitance cumulative data and the first right-side coupling capacitance cumulative data on the coupling capacitance of the pixel to be compensated is equal. If the first left-side coupling influence coefficient is greater than 128, it indicates that the influence degree of the data voltage output by the first left-side data line on the coupling capacitance of the pixel to be compensated is greater. Conversely, if the first right-side coupling influence coefficient is greater than 128, it indicates that the influence degree of the data voltage output by the first right-side data line on the coupling capacitance of the pixel to be compensated is greater.

[0094] In another exemplary embodiment, in the case that the first coupling influence cumulative data is a sum of the first left-side coupling influence cumulative data and the second left-side coupling influence cumulative data, and the second coupling influence cumulative data is a sum of the first right-side coupling influence cumulative data and the second right-side coupling influence cumulative data, the value range of the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient, and the fourth right-side coupling influence coefficient is 0-256. The sum of the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient, and the fourth right-side coupling influence coefficient is equal to 256.

[0095] In some embodiments, the coupling influence cumulative data is obtained based on the normalized reference data, the uniform reference data and the total coupling influence data, including: dividing the total coupling influence data by the normalized reference data and the uniform reference data to obtain the coupling influence cumulative data. In this way, the total coupling influence data is normalized and homogenized.

[0096] In some embodiments, when the first coupling influence cumulative data is the product of the first left-side coupling capacitance cumulative data and the first left-side coupling influence coefficient, and the second coupling influence cumulative data is the product of the first right-side coupling capacitance cumulative data and the first right-side coupling influence coefficient, the normalized reference data is equal to the sum of the first left-side coupling influence coefficient and the first right-side coupling influence coefficient.

[0097] In some embodiments, when the first coupling influence cumulative data is the sum of the first left-side coupling influence cumulative data and the second left-side coupling influence cumulative data, and the second coupling influence cumulative data is the sum of the first right-side coupling influence cumulative data and the second right-side coupling influence cumulative data, the normalized reference data is equal to the sum of the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient and the second right-side coupling influence coefficient.

[0098] In some embodiments, the uniform reference data is equal to the total number of scan lines 112 of the display panel 11, but is not limited thereto.

[0099] In some embodiments, the original grayscale value of the to-be-compensated pixel in the current frame is compensated based on the grayscale compensation value to obtain a target grayscale value, including:

[0100] The first original grayscale value of the first to-be-compensated pixel connected to the data line 111 transmitting the data voltage of the first polarity in the current frame is compensated based on the first grayscale compensation value to obtain a first target grayscale value, the first target grayscale value being greater than the first original grayscale value.

[0101] The second original grayscale value of the second to-be-compensated pixel connected to the data line 111 transmitting the data voltage of the second polarity in the current frame is compensated based on the second grayscale compensation value to obtain a second target grayscale value, the second target grayscale value being less than the second original grayscale value, and the second polarity being opposite to the first polarity.

[0102] In some embodiments of the present application, the first to-be-compensated pixel and the second to-be-compensated pixel connected to the two data lines 111 respectively outputting data voltages of different polarities are respectively compensated in opposite directions to compensate for the pixels 113 that are too bright or too dark, thereby improving the brightness non-uniformity problem of the display panel 11. In particular, when the display panel 11 adopts the driving architecture shown in FIGS. 1A and 1B, the horizontal stripe problem caused by the brightness non-uniformity of the display panel 11 can be improved. Figure 2 and Figure 3 the driving architecture shown in FIGS. 1A and 1B, the horizontal stripe problem caused by the brightness non-uniformity of the display panel 11 can be improved.

[0103] It should be noted that the timing controller 12 is further configured to determine the first pixel to be compensated and the second pixel to be compensated according to the polarity of the data voltage transmitted by the data line 111 to which each of the plurality of pixels 113 in the current frame is connected and the connection relationship between the pixel 113 and the data line 111 in the pixel column.

[0104] In some embodiments, the determining of the gray scale compensation value of the pixel to be compensated in the current frame based on the coupling influence cumulative data and the gain coefficient comprises: determining the product of the coupling influence cumulative data and the gain coefficient as the gray scale compensation value of the pixel to be compensated in the current frame. In this way, the compensation effect of the gray scale compensation value on the pixel to be compensated is improved.

[0105] In some embodiments, the timing controller 12 is further configured to determine the original gray scale data of each of the plurality of pixels 113 in the previous frame in the previous frame as the target gray scale data of the pixel 113 in the previous frame. In this way, the plurality of pixels 113 in the previous frame realize the display of the picture in the previous frame based on the original gray scale data. Therefore, taking the display process of the adjacent two frames as a compensation period, the original gray scale data of the pixel 113 in the previous frame is not compensated, and the original gray scale data of the pixel to be compensated in the current frame is compensated.

[0106] It should be noted that the timing controller 12 further comprises a memory (not shown in the figure). The memory stores the coupling influence coefficient of the pixel to be compensated and the gain coefficient. In some embodiments, the coupling influence coefficient can include the first left coupling influence coefficient and the first right coupling influence coefficient. In other embodiments, the coupling influence coefficient can include the first left coupling influence coefficient, the second left coupling influence coefficient, the first right coupling influence coefficient, and the second right coupling influence coefficient.

[0107] The coupling influence coefficient of the pixel to be compensated and the gain coefficient are obtained by debugging the light and dark unevenness of the pure color picture so that the horizontal stripe phenomenon is lightened.

[0108] Specifically, in the case that the display panel 11 displays a pure color picture, a plurality of regions are divided according to the light and dark conditions of the pure color picture, and a target region is determined from the plurality of regions. Then, an initial first left coupling influence coefficient and an initial gain coefficient are set for the target region. The initial first left coupling influence coefficient and the initial gain coefficient are adjusted until the light and dark unevenness of the target region is lightened, and the first left coupling influence coefficient and the initial gain coefficient of the target region can be obtained. The target region can be the center region of the display panel 11.

[0109] After the horizontal stripes of the target area are debugged, switch the states before and after the debugging back and forth. Observe the horizontal stripes of other areas of the panel, if the horizontal stripes and other brightness unevenness problems of other areas are also slight, it means that the first left side coupling influence coefficient of the target area can be used for the other areas. If the horizontal stripes and other brightness unevenness problems of other areas are slightly more serious than before the debugging but still visible, it means that the compensation value is not enough, and the same compensation needs to be continued on the basis of the first left side coupling influence coefficient of the target area, for example, the first left side coupling influence coefficient is 128 plus 30 to get 158, at this time, 158 can be continued to add 20; if the horizontal stripes and other brightness unevenness problems of other areas are more serious than before the debugging, that is, the compensation is wrong, the value needs to be added or subtracted in the opposite direction of the original compensation direction.

[0110] The calculation process of the gray scale compensation value G ij of the to-be-compensated pixel connected with the i-th scanning line and the j-th data line in the current frame is described below.

[0111] First, the gray scale data of the previous frame image is acquired to obtain the voltage data of the image through the gray scale-voltage correspondence of the panel; then the voltage data of two adjacent data lines 111 connected with the to-be-compensated pixel adjacent to the i-th scanning line 112 and the j-th data line 111 is accumulated.

[0112] .

[0113] Wherein, S j(j=2:2:ImgW-2,Frame=1) is the voltage data of the data voltage transmitted by the first left side data line 111A adjacent to the to-be-compensated pixel in the previous frame, and S j(j=3:2:ImgW-1,Frame=1) is the voltage data of the data voltage transmitted by the first right side data line 111B adjacent to the to-be-compensated pixel in the previous frame. The polarity of the data voltage transmitted by the first left side data line 111A is opposite to that of the data voltage transmitted by the first right side data line 111B. G R , G G and G B are the gray scale data of the red pixel, the green pixel and the blue pixel in the previous frame respectively. V (ij，Frame=1) (G R ) is equal to the data voltage corresponding to the gray scale data of the red pixel in the previous frame. V (ij，Frame=1) (G G ) and V (ij，Frame=1) (G B ) can be extended in this way, which is not described here. Vtotal is equal to the total number of scanning lines 112.

[0114] Then, the gray scale data of the current frame is acquired by the panel gray scale-voltage corresponding relationship to obtain the voltage data of the image, and then the data voltage outputted by two data lines 111 adjacent to the to-be-compensated pixel connected with the i-th row scanning line and the j-th data line in the current frame is accumulated, and the calculation formula is as follows:

[0115] .

[0116] Wherein, S ij is the sum of the voltage data outputted in the current frame when the first left data line outputs the data voltage corresponding to the i-th row pixel and S j(j=2:2:ImgW-2,Frame=1) . i，j+1 is the sum of the voltage data outputted in the current frame when the first right data line outputs the data voltage corresponding to the i-th row pixel 113 and S j(j=3:2:ImgW-1,Frame=1) . (kj，Frame=2) (G R ) is the data voltage corresponding to the gray scale data of the red pixel in the current frame. V (kj，Frame=2) (G G ) and V (kj，Frame=2) (G B ) can be extended in this way, and details are not described herein.

[0117] Finally, the formula for calculating the gray scale compensation value of the to-be-compensated pixel in the current frame is as follows:

[0118] .

[0119] Wherein, a ij is the first left coupling influence coefficient. 256-a ij is the first right coupling influence coefficient. Gain(color, G ij ) is the gain coefficient. ΔG ij is the gray scale compensation value of the to-be-compensated pixel in the current frame.

[0120] V(G ij ) is the data voltage of the pixel connected with the i-th row pixel by the first left data line 111A. V(G i,j+1 ) is the data voltage of the pixel connected with the i-th row pixel by the first right data line. Vtotal is equal to the total number of scanning lines 112. i represents the row number of the i-th row pixel. 256 is the uniform distribution reference data.

[0121] The above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that, include: The display panel includes multiple data lines and multiple pixel columns, wherein one of the pixel columns is located between adjacent data lines and includes at least two pixels; as well as The timing controller, connected to the display panel, is configured as follows: The cumulative data of the coupling effect of the data voltage transmitted in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame is determined by the data line adjacent to the pixel to be compensated in the current frame. The grayscale compensation value of the pixel to be compensated in the current frame is determined based on the cumulative data of the coupling effect and the gain coefficient. The original grayscale value of the pixel to be compensated in the current frame is compensated based on the grayscale compensation value to obtain the target grayscale value; The step of determining the cumulative data of the coupling effect of the data voltage transmitted in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame, which is adjacent to the data line of the pixel to be compensated in the current frame, includes: The first coupling effect of the data voltage transmitted by one or more left-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame is determined by accumulating the data. The cumulative data of the second coupling effect of one or more right-side data lines adjacent to the pixel to be compensated on the data voltage of the pixel to be compensated in the previous frame and the current frame is determined, wherein the pixel to be compensated is located between one or more left-side data lines and one or more right-side data lines; Based on the first coupling effect data and the second coupling effect data, the total cumulative coupling effect data is obtained; Based on the normalized baseline data, the average baseline data, and the total coupling effect data, the cumulative coupling effect data is obtained.

2. The display device according to claim 1, characterized in that, The determination of the first coupling effect accumulated data of the data voltage transmitted by one or more left-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes: The data voltage transmitted by a first left-side data line adjacent to the pixel to be compensated in the previous frame and the current frame is used to accumulate the data of the first left-side coupling capacitance of the pixel to be compensated in the current frame. Based on the first left-side coupling capacitor cumulative data and the first left-side coupling influence coefficient of the first left-side data line on the pixel to be compensated, the first coupling influence cumulative data is obtained.

3. The display device according to claim 1, characterized in that, The determination of the first coupling effect accumulated data of the data voltage transmitted by one or more left-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes: The data voltage transmitted by a first left-side data line adjacent to the pixel to be compensated in the previous frame and the current frame is used to accumulate the data of the first left-side coupling capacitance of the pixel to be compensated in the current frame. The data voltage transmitted by a second left data line adjacent to the pixel to be compensated in the previous frame and the current frame is used to accumulate data on the second left coupling capacitance of the pixel to be compensated in the current frame, and the first left data line is located between the second left data line and the pixel to be compensated; Based on the first left-side coupling capacitor cumulative data and the first left-side coupling influence coefficient of the first left-side data line on the pixel to be compensated, the first left-side coupling influence cumulative data is obtained; Based on the accumulated data of the second left-side coupling capacitor and the second left-side coupling influence coefficient of the second left-side data line on the pixel to be compensated, the accumulated data of the second left-side coupling influence is obtained; Based on the first cumulative data of left-side coupling influence and the second cumulative data of left-side coupling influence, the first cumulative data of coupling influence is obtained.

4. The display device according to claim 1, characterized in that, The determination of the second coupling effect accumulated data of the data voltage transmitted by one or more right-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes: The data voltage transmitted by a first right-side data line adjacent to the pixel to be compensated in the previous frame and the current frame is used to accumulate the data of the first right-side coupling capacitance of the pixel to be compensated in the current frame. Based on the first right-side coupling capacitor cumulative data and the first right-side coupling influence coefficient of the first right-side data line on the pixel to be compensated, the second coupling influence cumulative data is obtained.

5. The display device according to claim 1, characterized in that, The determination of the second coupling effect accumulated data of the data voltage transmitted by one or more right-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes: The data voltage transmitted by a first right-side data line adjacent to the pixel to be compensated in the previous frame and the current frame is used to accumulate the data of the first right-side coupling capacitance of the pixel to be compensated in the current frame. The data voltage transmitted by a second right-side data line adjacent to the pixel to be compensated in the previous frame and the current frame is used to accumulate the data of the second right-side coupling capacitance of the pixel to be compensated in the current frame, and the first right-side data line is located between the second right-side data line and the pixel to be compensated. Based on the first right-side coupling capacitor cumulative data and the first right-side coupling influence coefficient of the first right-side data line on the pixel to be compensated, the first right-side coupling influence cumulative data is obtained. Based on the accumulated data of the second right-side coupling capacitor and the second right-side coupling influence coefficient of the second right-side data line on the pixel to be compensated, the accumulated data of the second right-side coupling influence is obtained; Based on the first right-side coupling effect cumulative data and the second right-side coupling effect cumulative data, the second coupling effect cumulative data is obtained.

6. The display device according to claim 1, characterized in that, The cumulative coupling effect data, obtained based on the normalized baseline data, the average baseline data, and the total coupling effect data, includes: The total coupling effect data is divided by the normalized baseline data and the average baseline data to obtain the cumulative coupling effect data.

7. The display device according to claim 6, characterized in that, The average baseline data is equal to the total number of scan lines on the display panel.

8. The display device according to claim 1, characterized in that, The step of compensating the original grayscale value of the pixel to be compensated in the current frame based on the grayscale compensation value to obtain the target grayscale value includes: Based on the first gray level compensation value, the first pixel to be compensated connected to the data line of the data voltage of the first polarity is compensated for the first original gray level value in the current frame to obtain a first target gray level value, which is greater than the first original gray level value. The second pixel to be compensated, connected to the data line of the data voltage of the second polarity, is compensated based on the second gray level compensation value in the current frame to obtain the second target gray level value; the second target gray level value is less than the second original gray level value, and the second polarity is opposite to the first polarity.

9. The display device according to any one of claims 1-8, characterized in that, The timing controller is further configured to: determine the original grayscale data of each of the plurality of pixels in the previous frame as the target grayscale data of the pixel in the previous frame.

10. The display device according to claim 1, characterized in that, At least two pixels in one of the pixel columns are each connected to one of the two data lines.

Images